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DOI: 10.1055/s-2008-1027913
© Georg Thieme Verlag KG Stuttgart · New York
Vergleich von Spektral- und Zeit-Domänen-OCT hinsichtlich der automatisierten Erfassung der zentralen Netzhautdicke
Comparison of Spectral- and Time-Domain OCT in regard of the Automatic Detection of Central Retinal ThicknessPublication History
Eingegangen: 3.8.2008
Angenommen: 15.10.2008
Publication Date:
10 February 2009 (online)

Zusammenfassung
Hintergrund: Es wurde die automatische Erfassung der zentralen Netzhautdicke durch ein StratusOCT (Zeiss, Deutschland) und ein Spectralis-HRA-OCT-System (Heidelberg Engineering, Deutschland) verglichen. Material und Methoden: 50 Patienten (25 Frauen und 25 Männer) werden in die Studie eingeschlossen. In allen Fällen wurden beide Augen gemessen. Es erfolgten konsekutive Messungen an beiden Geräten. Die zentrale und regional verteile Netzhautdicke wurde aus beiden Geräten automatisiert berechnet und die Übereinstimmung der Messergebnisse mittels Bland-Altmann-Analyse untersucht. Ergebnisse: Die foveale Netzhautdicke war beim Spectralis-HRA-OCT signifikant größer als beim StratusOCT (p < 0,01). Schlussfolgerung: Sowohl Time-Domain- als auch Spectral-Domain-OCT-Geräte liefern verlässliche Daten hinsichtlich der automatisierten Erfassung der Netzhautdicke. Die Spectral-Domain-OCT-Maschine liefert jedoch signifikant dickere Werte für die zentrale Netzhautdicke als die Time-Domain-Maschine. Entsprechend können die Messwerte aus beiden Maschinen nicht direkt verglichen werden.
Abstract
Background: The aim of this study was to compare macular thickness measurements obtained from time-domain optical coherence tomography (OCT) and spectral-domain OCT to evaluate their agreement. Materials and Methods: Fifty randomly assigned subjects were included. Twenty-five were male, twenty-five female. In all cases both eyes were measured. Serial measurements were obtained from time-domain (StratusOCT, Zeiss) and spectral-domain OCT (Heidelberg Engineering, Germany). Total and regional macular thicknesses were obtained from both machines. Their agreement was estimated by Bland Altman plots. Results: The foveal and total macular thicknesses measured by 3D OCT were significantly greater than those measured by Stratus OCT (p < 0.001). Conclusions: While both time-domain and spectral-domain OCTs are reliable for macular thickness measurements, spectral-domain OCT delivers significantly higher values for macular thickness compared to the time-domain OCT. Macular measurements obtained from the two OCT systems may not be used interchangeably.
Schlüsselwörter
Retina - physiologische Optik - Informationstechnologie
Key words
retina - physiological optics - information technology
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Dr. Sven C. Beutelspacher
Augenklinik Klinikum Nürnberg
Prof. Ernst-Nathan-Str. 1
90419 Nürnberg
Phone: ++ 49/911/398-26 68
Fax: ++ 49/911/398-32 91
Email: sven.beutelspacher@klinikum-nuernberg.de